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Noise-reducing polyethylene composite material for drainage pipeline of building and preparation method thereof

A technology for building drainage and composite materials, which is applied in the field of polyethylene sound-absorbing composite materials for building drainage pipes and its preparation, can solve the problems of failing to meet environmental protection requirements, and achieve high oxidation induction time, unchanged hydrostatic performance, and mechanical properties Improved effect

Active Publication Date: 2014-04-30
ZHEJIANG WEIXING NEW BUILDING MATERIALS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, most of the current research is to change the physical structure of the pipeline, but this method does not really effectively control the noise below 45 decibels, which does not meet the environmental protection requirements.

Method used

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  • Noise-reducing polyethylene composite material for drainage pipeline of building and preparation method thereof
  • Noise-reducing polyethylene composite material for drainage pipeline of building and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] (1) Formula: 40 parts by weight of high-density polyethylene, 0.015 parts by weight of dicumyl peroxide, 0.8 parts by weight of vinyltrimethoxysilane, 50 parts by weight of activated nano-scale barium sulfate, activated 10 parts by weight of 1200 mesh barium sulfate, 2 parts by weight of polyethylene wax, 4 parts by weight of titanium dioxide, 0.3 parts by weight of antioxidant 1010, 0.3 parts by weight of antioxidant 168, 2 parts by weight of carbon black number.

[0032] (2) Preparation process: weigh the above formula and put it into a high-speed mixer, stir it at 25°C for 5 minutes, and discharge it for use. Add the mixed material into the extruder to granulate. The process conditions of the extruder:

[0033] The length-to-diameter ratio of the extruder is L / D=44:1, the number of heating sections of the extruder is 12 sections, and a vacuum extraction port is opened in the 9th heating section, and the processing temperature is gradually increased from the fe...

Embodiment 2

[0037] (1) Formula: 30 parts by weight of high-density polyethylene, 0.02 parts by weight of a mixture of di-tert-butane peroxide and 1,3-di-tert-butyl peroxide in a weight ratio of 1:1, dimethyl 0.8 parts by weight of vinyl ethoxysilane, 50 parts by weight of nano-scale barium sulfate after activation treatment, 20 parts by weight of 1200 mesh barium sulfate after activation treatment, 2 parts by weight of polyethylene wax, 4 parts by weight of titanium dioxide Number, antioxidant 1010 0.3 parts by weight, antioxidant 168 0.3 parts by weight, carbon black 2 parts by weight.

[0038] (2) Preparation process: weigh the above formula and put it into a high-speed mixer, stir it at 25°C for 5 minutes, and discharge it for use. Add the mixed material into the extruder to granulate. The process conditions of the extruder:

[0039] The length-to-diameter ratio of the extruder is L / D=44:1, the number of heating sections of the extruder is 12 sections, and a vacuum extraction po...

Embodiment 3

[0041] (1) Formula: 30 parts by weight of high-density polyethylene, 0.01 parts by weight of 2,5-dimethyl-2,5 bis(tert-butylperoxy)hexyne, methylvinyldiethoxysilane 0.5 parts by weight, 40 parts by weight of nano-scale barium sulfate that activation has been processed, 20 parts by weight of 1200 mesh barium sulfate that activation has been processed, 2 parts by weight of polyethylene wax, 4 parts by weight of titanium dioxide, antioxidant 168 0.3 parts by weight, carbon black 2 parts by weight.

[0042] (2) Preparation process: weigh the above formula and put it into a high-speed mixer, stir it at 25°C for 5 minutes, and discharge it for use. Add the mixed material into the extruder to granulate. The process conditions of the extruder:

[0043] The length-to-diameter ratio of the extruder is L / D=44:1, the number of heating sections of the extruder is 12 sections, and a vacuum extraction port is opened in the 9th heating section, and the processing temperature is gradual...

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Abstract

The invention relates to a noise-reducing polyethylene composite material for a drainage pipeline of a building and a preparation method thereof, belonging to the technical field of inorganic powder modified high-molecular polymers. The material comprises the following raw materials in parts by weight: 30-50 parts of polyethylene, 0.01-0.02 part of a peroxide initiator, 0.5-1 part of vinyl unsaturated silane, 50-60 parts of barium sulfate, 1-3 parts of a dispersant, 3-5 parts of titanium dioxide, 0.2-0.5 part of an antioxidant and 1-3 parts of carbon black. The material provided by the invention effectively solves the problem that existing drainage pipeline of the building is noisy and poor in high temperature resistance and chemical corrosion resistance. Raw materials are input to a high speed mixer to be mixed firstly, and then pelleted through a twin-screw extruder to obtain the composite material. The composite material provided by the invention has the advantages of mute-resistant effect, chemical corrosion resistance, heat resistance and shock resistance of a common tubular product, simple processing process, low cost and suitability of preparing the drainage pipeline of the building.

Description

technical field [0001] The invention belongs to the technical field of inorganic powder modified high molecular polymers, and in particular relates to a polyethylene sound-absorbing composite material for building drainage pipes and a preparation method thereof. Background technique [0002] As a general-purpose resin, polyethylene has excellent mechanical properties and processing properties, occupies an important position in plastics, and is increasingly used as a raw material for building drainage pipes, but its sound insulation performance is far from satisfying Require. With the improvement of living standards, people pay more and more attention to the noise problem in the building room. At present, the noise of the building's indoor drainage system is generally greater than 45 decibels, which has seriously affected people's home life. The main ways to solve the indoor drainage noise are Two types: change the physical structure of the pipeline and optimize the material...

Claims

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Application Information

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IPC IPC(8): C08L51/06C08K13/06C08K9/06C08K9/04C08K3/30C08K3/22C08K3/04C08F255/02C08F230/08
Inventor 闫立军段景宽冯金茂王登勇陶岳杰
Owner ZHEJIANG WEIXING NEW BUILDING MATERIALS CO LTD
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